Is E131 Vegan? Patent Blue V
E131 (Patent Blue V) is vegan. It is derived from synthetic dye, with no animal involvement in standard food production.
Why is E131 vegan?
The source of Patent Blue V is synthetic dye, which is plant-derived, mineral or synthetic — all acceptable for vegans.
Is E131 vegetarian?
E131 is vegetarian.
What should vegans do about E131?
If you're avoiding Patent Blue V, look for products without E131 in the ingredients list.
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Helpful for vegan label reading
Resources for vegans checking E-numbers like E131
Vegan Ingredient Guide
Spot hidden animal-derived E-numbers including E131 on any food label.
Vegan Label Reading
Books and pocket cards that decode E-numbers and hidden animal additives in seconds.
Certified Vegan Foods
Products with vegan certification logos — no ingredient-by-ingredient guessing.
E131 vegan FAQs
Is E131 vegan?
E131 is always vegan: synthetic dye.
Is E131 always non-vegan?
No — E131 is always vegan. It is derived from synthetic dye in all standard food uses.
How can I tell if E131 is vegan in a specific product?
You don't need to check for E131 specifically — it is always vegan. Look for vegan certification logos if you want a full product-level guarantee.
Other additives to watch for vegans
Data: Open Food Facts (ODbL). Vegan status reflects the most common source — always verify with manufacturer or look for certified vegan labelling.